“…This association is thought to be because SARS-CoV-2 binds to the angiotensin-converting enzyme 2 (ACE-2) receptor found in alveolar epithelial cells in the lung, and these receptors are also detected in gastrointestinal epithelial cells resulting in infection and local viral replication, and increase cytotoxic effect. (4,5) In addition, some authors also think that organ damage in some COVID-19 patients may be caused by severe systemic in ammation caused by upregulation of cellular and natural immunity. SARS-CoV-2 infection triggers the activation of T lymphocytes and the in ammatory signaling pathway which ultimately results in the release of multiple proin ammatory cytokine, such as granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin (IL) -2, IL-6, IL-7, IL-10, and tumor necrosis factor-α (TNF-α).…”